Here’s a pretty interesting resource that I am considering. I have a 10-2 on order and opted to leave out the onan gen. which saved me about 5k. May start off with 2 100ah li batts and a batt isolator and see how they do with the factory components NL is putting on the 2022’s.
My 2020 gmc 3500 DRW has a second alternator, but I too am unsure about how to maximize the charging while driving. I think I heard that if the truck is just idling, you won’t get the results you are looking for.